city of baltimore still planning the party, a very serious football battle is being waged off the gridiron. in fact, the very fate of america's favorite sport hangs in the balance with attorneys and doctors piling on to the nfl over head injuries. chronic brain condition of cte is beginning to make the way in to the public conscious. it's the clearest evidence of brain damage linked to depression, memory loss, early dementia and even death. but the lawsuits don't fault the league, necessarily, for a lack of issue on the issue. the nfl accused of researching the long-term effects of concussions but then covering up the results to protect its bottom line. that's a claim the league vehemently denied. could the legal challenges change the game forever and necessarily a bad thing? bloomberg businessweek's latest cover story is "crunch time." it's on news stands right now and paul bar vet the author and assisting managing editor. welcome. >> thanks. >> you write in here that the very future of football is at stake here and i'll quote you. you say if science one day determines that merely playing